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Re: (ET) PV powered ET more questions
>armature contactors, {The bushings around the large terminals.}
which are those? I've removed the L, 1A, and 2A contactors; actually the
only contactor left is the PTO right now.
my fuel gauge is new but my power meter is old (orig?) I'll check that
thanks for the tips!
and thanks Markus (earlier post) for confirming the field resistance at 15
ohms.
dave
--
Open WebMail Project (http://openwebmail.org)
---------- Original Message -----------
From: "RJ Kanary" <rjkanary nauticom net>
To: "daveb" <~~~~~~~~~~~~~~~~>, "Chris Zach" <czach computer org>, "Markus
Lorch" <mlorch vt edu>
Cc: <Elec-trak cosmos phy tufts edu>
Sent: Mon, 3 May 2004 21:32:54 -0400
Subject: Re: (ET) PV powered ET more questions
> Both the meters can go to ground, especially if they have ever
> gotten wet. It would not pass much current, until another item goes
> to ground, with the resultant arcing. Other prime suspects are the
> armature contactors, {The bushings around the large terminals.} ,
> the traction motor armature terminals, and that perennial favorite,
> the Delco® lift motor.
>
> ----- Original Message -----
> From: "daveb" <~~~~~~~~~~~~~~~~>
> To: "Chris Zach" <czach computer org>; "Markus Lorch" <mlorch vt edu>
> Cc: <Elec-trak cosmos phy tufts edu>
> Sent: Monday, May 03, 2004 9:33 PM
> Subject: Re: (ET) PV powered ET more questions
>
> > over the wkend I finally got the chance to start the conversion of my
> > E12S
> to
> > the alltrax controller. I'm not nearly finished yet as I am taking
> > this
> > opportunity to thoroughly check out the wiring for shorts, clean
> > things up
> > etc.
> >
> > so far I've removed and re-installed the rear batteries after painting
> > the
> > box and installing the plastic battery bags from Bill G. Before I
> > started
> I
> > was getting 5v between the pack and the frame. with the batteries
> > cleaned
> up
> > in the new bags and connected together but not to the wiring harness I
> read
> > 0volts. when connecting the cable that runs to the shunt I read 4.8v
> again.
> > Ok I reason even though I inspected the wires in and out of the box
> something
> > is grounded but where. So I get the bright of idea of using the ohm
> > meter
> > but find nothing! No continuity anywhere between the cable and the
> > frame
> and
> > yet I read 4.8v. How can that be? is it because my ohm meter's
> > battery
> is
> > only 9v, old and probably needs replacing?
> >
> > The next time I'm at the farm I'll disconnect the cable from the shunt
> > and
> > measure voltage to the frame and proceed downstream
> > disconnecting/checking/reconnecting as I go.
> >
> > oh and I measure 15.8ohms across the motor's field. is that within
> > range?
> I
> > seem to remember someone not long ago mentioned field resistance but I
> don't
> > remember what the correct amt was.
> >
> > any other ideas or comments would be greatly appreciated.
> > thanks,
> > dave
> > seattle
> >
> > --
> > Open WebMail Project (http://openwebmail.org)
> >
> >
> > ---------- Original Message -----------
> > From: Chris Zach <czach computer org>
> > To: Markus Lorch <mlorch vt edu>
> > Cc: Elec-trak cosmos phy tufts edu
> > Sent: Thu, 29 Apr 2004 22:25:25 -0400
> > Subject: Re: (ET) PV powered ET more questions
> >
> > > Um no.
> > >
> > > If the higher capacity batteries are in series with the low capacity
> > > ones and you run the charger, what will happen? Either you will boil
> > > and overcharge the lower ones to charge up the higher ones, or you
> > > will
> > > never fully charge the higher capacity batteries.
> > >
> > > The "right" solution is a 36 volt inverter. If you're only going to
> > > use
> > > a little bit of power, then a 24 volt (better) or a 12 volt could
> > > *do*.
> > > However two of your batteries will be out of sync on charging, and
> > > you'll still wind up overcharging some batteries on the pack to get
> > > everything back in sync.
> > >
> > > Get a Trace DR3624. You'll have 3,600 watts of power, and it will
> > > pull the pack down evenly. With that you should be able to run
> > > anything.
> > > Chainsaw, etc.
> > >
> > > Chris
> > >
> > > Markus Lorch wrote:
> > >
> > > >>This is so I can use Solar PV to charge my batteries,
> > > >>carry a small inverter on the ET to run a small
> > > >>commercial inverter for string trimmers and electric
> > > >>chain saws (Price Club/CostoCo had a nice deal on
> > > >>1.75kw Xantrex inverters)
> > > >>(and run the fridge, a radio and a couple of lights in
> > > >>a pinch.) (There are a LOT of trees hanging over a LOT
> > > >>of electric lines anywhere I drive, many more than
> > > >>10-15 degrees past vertical)
> > > >
> > > >
> > > > The previous owner of my E20 has put two larger (higher capacity)
> > > > batteries in my elec-trak. These drive the 12V components. I also
> > > > have a 300W inverter hooked up (cheap $20) to which I connect my
> > > > small electric trimmer. It worked fine all afternoon yesterday.
> > > >
> > > > Maybe you can also have two batteries be larger?
> > > >
> > > > see my other post on chargers.
> > > >
> > > > Markus
> > > >
> > > >
> > > > _______________________________________________
> > > > Elec-trak mailing list
> > > > Elec-trak cosmos phy tufts edu
> > > > https://cosmos.phy.tufts.edu/mailman/listinfo/elec-trak
> > > >
> > > >
> > >
> > > _______________________________________________
> > > Elec-trak mailing list
> > > Elec-trak cosmos phy tufts edu
> > > https://cosmos.phy.tufts.edu/mailman/listinfo/elec-trak
> > ------- End of Original Message -------
> >
> >
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> > Elec-trak cosmos phy tufts edu
> > https://cosmos.phy.tufts.edu/mailman/listinfo/elec-trak
> >
------- End of Original Message -------